[Pdns-users] pdns stops responding to requests

Brandon Checketts brandonc at webpipe.net
Sun Dec 17 18:36:20 UTC 2006

I've just replaced two BIND servers with PowerDNS Servers.   They are configured
to use the gmysql backend, and MySQL is performing the replication between them.
  Everything seems to be working fine, but on the "slave" server, pdns seems to
just quit responding to DNS requests sometimes.   The web server portion of it
continues to respond, but DNS queries just don't get answered.   Also, when it
locks up, a netstat -l -n shows this (notice the Recv-Q for udp on port 53):

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State
tcp        0      0*                   LISTEN
tcp        0      0*                   LISTEN
tcp        0      0*                   LISTEN
tcp        0      0 *                   LISTEN
tcp        0      0*                   LISTEN
udp   105840      0 *
udp        0      0*
Active UNIX domain sockets (only servers)
Proto RefCnt Flags       Type       State         I-Node Path
unix  2      [ ACC ]     STREAM     LISTENING     1062394 /var/lib/mysql/mysql.sock
unix  2      [ ACC ]     STREAM     LISTENING     1101603
unix  2      [ ACC ]     STREAM     LISTENING     1062485

I've turned loglevel up to 9, but not seeing anything in the pdns logs that
indicate anything.  Can anybody recommend anything to look for, or anything that
I can do to help diagnose this problem?

Brandon Checketts
Webpipe.net System Administrator

More information about the Pdns-users mailing list